Who wants to join a group that will let anybody in? The majority of the human species that participates in organised religious groups that let anybody in who ca

Who wants to join a group that will let anybody in? The majority of the human species that participates in organised religious groups that let anybody in who can recite a credo or a shahada... (Of course there is still sacrifice - they all have arbitrary rules and constraints to lead to shared hardship and to create the essential us-vs-them.)